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changed locked TLB pages to the last two megabytes of RAM

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Markus Fröschle
2013-08-07 04:33:10 +00:00
parent 35ce06a57c
commit d51caf50ee
1 changed files with 3 additions and 3 deletions
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4
BaS_gcc/sources/mmu.S
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@@ -163,14 +163,14 @@ _mmu_init:
move.l d3,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
// 1fe0'0000 locked
move.l #0x1FE00000|std_mmutr,d0 // last megabyte of RAM. Reserved for BaS in RAM and BaS in ROM/data+bss
move.l #0x1FE00000|std_mmutr,d0 // last two megabytes of RAM. Reserved for BaS in RAM and BaS in ROM/data+bss
move.l #0x1FE00000|copyback_mmudr|MCF_MMU_MMUDR_LK,d1
move.l d0,MCF_MMU_MMUTR
move.l d1,MCF_MMU_MMUDR
move.l d2,MCF_MMU_MMUOR // setzen data
move.l d3,MCF_MMU_MMUOR // setzen instr
// 1ff0'0000 locked (FIXME: why is this?)
// 1ff0'0000 locked
move.l #0x1FF00000|std_mmutr,d0
move.l #0x1FF00000|copyback_mmudr|MCF_MMU_MMUDR_LK,d1
move.l d0,MCF_MMU_MMUTR